\documentclass[landscape]{article}
\setlength{\pdfpagewidth}{11in} \setlength{\pdfpageheight}{8.5in}
\begin{document}
\begin{tabular}{lcccc}
\multicolumn{5}{c}{Effect} \\
\multicolumn{5}{c}{)} \\ \hline
 & (1) & (2) & (3) & (4) \\
 & changepop &  & changepop &  \\
VARIABLES & coef & se & coef & se \\ \hline
 &  &  &  &  \\
changepop & . & [.] & . & [.] \\
mortality1200 & -0.25444 & [0.34110] & -0.29495 & [0.38744] \\
mortality1300 & 0.15517 & [0.58890] & 0.10839 & [0.67806] \\
mortality1400 & -0.86632*** & [0.28286] & -0.90632*** & [0.33752] \\
mortality1500 & 0.64679* & [0.34002] & 0.58645 & [0.46300] \\
mortality1600 & 0.69315* & [0.38069] & 0.62678 & [0.44802] \\
mortality1700 & -0.00214 & [0.40999] & -0.12181 & [0.48266] \\
mortality1750 & 0.19422 & [0.14707] &  &  \\
o.\_Iyear\_900 & - &  & - &  \\
o.\_Iyear\_1000 & - &  & - &  \\
o.\_Iyear\_1100 & - &  & - &  \\
o.\_Iyear\_1200 & - &  &  &  \\
\_Iyear\_1300 & 6.28022 & [21.46340] & 46.77739* & [27.29041] \\
\_Iyear\_1400 & -7.86715 & [16.82518] & 29.31173* & [15.34924] \\
\_Iyear\_1500 & -48.45140** & [20.49225] & -13.52215 & [18.39305] \\
\_Iyear\_1600 & -25.13017 & [20.65037] & 8.52763 & [17.91127] \\
\_Iyear\_1700 & -0.95951 & [20.27782] & 30.00826 & [21.68833] \\
\_Iyear\_1750 & -24.67246 & [15.65541] &  &  \\
o.\_Iyear\_1800 & - &  & - &  \\
o.\_Iyear\_1850 & - &  & - &  \\
 &  &  &  &  \\
\_Iyear\_1200 &  &  & 41.57248** & [16.09525] \\
o.\_Iyear\_1750 &  &  & - &  \\
 &  &  &  &  \\
Observations & 962 &  & 962 &  \\
R-squared & 0.09683 &  & 0.26465 &  \\
 wgt & 1100 &  & 1100 &  \\ \hline
\multicolumn{5}{c}{ Robust standard errors clustered at the district level in parentheses} \\
\multicolumn{5}{c}{ * significant at 10\%; ** significant at 5\%; *** significant at 1\%} \\
\end{tabular}
\end{document}
